noun
unevenness; variation; inconsistency
General term for lack of uniformity in quality, size, performance, etc. Often used in manufacturing, testing, and everyday descriptions.
製品の品質にばらつきがある。
There is variation in the quality of the products.
テストの点数にばらつきが見られた。
There was unevenness in the test scores.
noun
dispersion; scatter; spread; variability
Statistical term for the spread or dispersion of data points. Used in technical contexts.
データのばらつきを標準偏差で評価する。
Evaluate the dispersion of the data using standard deviation.
むら refers to unevenness in texture, color, or distribution, often with a negative connotation of patchiness. ばらつき is more neutral and often used for statistical or measurable variation.
分散 is the formal statistical term for variance. ばらつき is a more general, colloquial term for spread or variability.
Derived from the verb ばらつく (to be scattered, to be uneven), which itself comes from the mimetic root ばら (scattered, loose). The nominalized form ばらつき is used as a noun.